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Energy & Environmental Materials 2021年第4期4卷 603-610页

作者： Wanwei Jiang Haiting Shi xijun xu Jiadong Shen Zhiwei xu Renzong Hu State Key Laboratory of Separation Membranes and Membrane Processes School of Textile Science and EngineeringTiangong UniversityTianjin 300387China School of Materials Science and Engineering Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou 510640China

Aqueous Zn-ion battery has emerged as one of the most prospective energy storage devices due to its low cost,high safety,and ***,Zn-ion batteries are bottlenecked by significant capacity fading during long-term cycling and poor performance at high current ***,we report an available cooperation of multivariate manganese oxides@carbon hybrids(MnO_(2)/MnO@C and MnO_(2)/Mn_(3)O_(4)@C)via a plasma-assisted design as an attractive Zn-ion *** them,the MnO_(2)/MnO@C cathode exhibits a reversible specific capacity of 165 m Ah g^(-1)over 200 cycles at a high rate of 0.5 A g^(-1),and possesses great rate performance with high capacities of 110 and 100 m Ah g^(-1)at a high rate of 0.8 and 1 A g^(-1),*** good cathode performance significantly results from the facile charge transfer and ions(Zn^(2+)and H^(+))insertion in the manganese oxides/carbon hybrids featuring phase stability behavior in the available cooperation of multivalence and carbon conductive *** work will promote the Zn-manganese dioxide system for the design of low-cost and high-performance aqueous rechargeable Zn-ion batteries.

关键词： aqueous rechargeable Zn batteries conductive substrates multivariate manganese oxides phase stability plasma

The Contact Interface Engineering of All-Sulfide-Based Solid State Batteries via Infiltrating Dissoluble Sulfide Electrolyte

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Energy & Environmental Materials 2023年第6期6卷 364-371页

作者： Lei Xi Yu Li Dechao Zhang Zhengbo Liu xijun xu Jun Liu Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510641China

All-solid-state lithium batteries(ASSLBs)based on sulfide solid electrolytes(SEs)are one of the most promising strategies for next-generation energy storage systems and electronic ***,the poor chemical/electrochemical stability of sulfide SEs with oxide cathode materials and high interfacial impedance,particularly due to physical contact failure,are the major limiting factors to the development of sulfide SEs in ***,the composite cathode of MOF-derived Fe_(7)S_(8)@C and Li_(6)PS_(5)Br fabricated by an infiltration method(IN-Fe_(7)S_(8))with dissoluble sulfide electrolyte(dissoluble SE)is *** SE can easily infiltrate the porous sheet-type Fe_(7)S_(8)@C cathode to homogeneously contact with Fe_(7)S_(8)nanoparticles that are embedded in the surrounding carbon matrixes and form a fast ionic transport *** from applying dissoluble SE and Fe_(7)S_(8)@C,the IN-Fe_(7)S_(8)-based cells displayed a reversible capacity of 510 mAh g^(-1)after 180 cycles at 0.045 mA cm^(-2)at 30℃.This work demonstrates a novel and practical method for the development of high-performance all-sulfide-based solid state batteries.

关键词： all-solid-state lithium batteries infiltration ionic transport iron sulfide sulfide solid electrolyte

Challenges and Development of Composite Solid Electrolytes for All-solid-state Lithium Batteries

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Chemical Research in Chinese Universities 2021年第2期37卷 210-231页

作者： LIU Li ZHANG Dechao xu xijun LIU Zhengbo LIU Jun Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou510641P.R.China

All-solid-state lithium batteries are considered to be a new battery system with great development potential and application prospects due to the advantages of high energy density and high *** a key component of all-solid-state lithium batteries,the development of solid-state electrolytes has received extensive attention in recent years,but most solid electrolytes still exhibit problems,such as low ion conductivity and poor interface *** design of composite solid-state electrolyte materials with both excellent electrochemical and mechanical properties is an effective way to develop all-solid-state lithium *** review introduces different types of pure component solid electrolytes and analyzes their respective advantages and characteristics ***,the research progress of composite electrolytes in preparation method,ionic conduction,suppression of lithium dendrites,and the improvement of electrochemical performances are reviewed from the perspective of composite electrolyte structure design,which is to meet different performance *** the future development direction and trend of composite electrolytes are prospected.

关键词： All-solid-state lithium battery Solid electrolyte Composite solid electrolyte

Anhydride type film-forming electrolyte additives for high-temperature LiNi0.6Co0.2Mn0.2O2//graphite pouch cells

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Progress in Natural Science:Materials International 2023年第3期33卷 320-327页

作者： Anwei Zhang Chengyun Wang Weizhen Fan Jingwei Zhao Yanping Huo xijun xu GAC Automotive Research &Development Center Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and Engineering South China University of Technology Research and Development Center Guangzhou Tinci Materials Technology Co. Ltd. College of Chemical Engineering and Light Industry Guangdong University of Technology

LiNi0.6Co0.2Mn0.2O2//graphite full cell, due to its high energy density as the most promising candidate for power batteries received increased attention, but the severe capacity loss under high-temperature conditions prevents their large-scale application. Here, glutaric anhydride(GA) and succinic anhydride(SA) as electrolyte additives are investigated to overcome the high-temperature problem of LiNi0.6Co0.2Mn0.2O2//graphite cells. Due to the unique film-forming features and high-temperature stability, the cells containing 0.5% GA and 0.5% SA can retain capacity retention of 91.2% and 92.4% stored at 60°C for 15 days, corresponding to a negligible capacity loss of 4.6 and 0.8 m Ah g-1after 200 cycles, respectively. In addition, the lifespans of cells under 25°C are also significantly extended by introducing GA and SA into the electrolytes. Electrochemical and spectroscopic techniques results indicate the full cell capacity loss is predominantly caused by the unstable anode solid electrolyte interphase(SEI) layer and a stable SEI film derived from GA and SA is formed on the graphite electrode *** SEI film can effectively inhibit the consumption of electrolytes and enhance the high-temperature performance of cells. This work paves a way for moderating high energy density cells’ work under high-temperature operation by developing special anodic film-forming electrolyte additives.

关键词： Anhydride-based Electrolyte additives Film-forming LiNi0.6Co0.2Mn0.2O2//graphite High-temperature performance

Microbial community functional structure in response to micro-aerobic conditions in sulfate-reducing sulfur-producing bioreactor

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Journal of Environmental Sciences 2014年第5期26卷 1099-1107页

作者： Hao Yu Chuan Chen Jincai Ma xijun xu Ronggui Fan Aijie Wang State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology School of Environmental Science and Engineering Liaoning Technical University Biosciences and Biotechnology Division Lawrence Livermore National Laboratory Research Center for Eco-Environmental Sciences Chinese Academy of Sciences

Limited oxygen supply to anaerobic wastewater treatment systems had been demonstrated as an effective strategy to improve elemental sulfur （So） recovery, coupling sulfate reduction and sulfide oxidation. However, little is known about the impact of dissolved oxygen （DO） on the microbial functional structures in these systems. We used a high throughput tool （GeoChip） to evaluate the microbial community structures in a biological desulfurization reactor under micro-aerobic conditions （DO： 0.02-0.33 rag/L）. The results indicated that the microbial community functional compositions and structures were dramatically altered with elevated DO levels. The abundances of dsrA/B genes involved in sulfate reduction processes significantly decreased （p 〈 0.05, LSD test） at relatively high DO concentration （DO： 0.33 mg/L）. The abundances of sox and fccA/B genes involved in sulfur/sulfide oxidation processes significantly increased （p 〈 0.05, LSD test） in low DO concentration conditions （DO： 0.09 mg/L） and then gradually decreased with continuously elevated DO levels. Their abundances coincided with the change of sulfate removal efliciencies and elemental sulfur （S^0） conversion efficiencies in the bioreactor. In addition, the abundance of carbon degradation genes increased with the raising of DO levels, showing that the heterotrophic microorganisms （e.g., fermentative microorganisms） were thriving under micro-aerobic condition. This study provides new insights into the impacts of micro-aerobic conditions on the microbial functional structure of sulfate- reducing sulfur-producing bioreactors, and revealed the potential linkage between functional microbial communities and reactor performance.

关键词： micro-aerobic condition elemental sulfur recovery microbial community functional gene array

Facile Synthesis of Yolk-Shell Bi@C Nanospheres with Superior Li-ion Storage Performances

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Acta Metallurgica Sinica(English Letters) 2021年第3期34卷 347-353页

作者： xijun xu Dechao Zhang Zhuosen Wang Shiyong Zuo Jiadong Shen Zhengbo Liu Jun Liu Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510641China School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China

Recently,exploring appropriate anode materials for current commercial lithium-ion batteries(LIBs) with suitable operating potential and long cycle life has attracted extensive ***,a novel anode of Bi nanoparticles fully encapsulated in carbon nanosphere framework with uniform yolk-shell nanostructure was prepared via a facile hydrothermal *** to the special structure design,this anode of yolk-shell Bi@C can effectively moderate the volume exchange,avoid the aggregation of active Bi nanoparticle and provide superior kinetic during discharge/charge *** in the voltage of 0.01-2.0 V,yolk-shell Bi@C anode exhibits outstanding Li+storage performance(a reversible capacity over 200 mAh g-1after 400 cycles at 1.25 A g-1) and excellent rate capability(a capacity of 404,347,304,275,240,199 and 163 mAh g-1 at0.05,0.1,0.25,0.5,1.0,1.8 and 3.2 A g-1,respectively).This work indicates that rational design of nanostructured anode materials is highly applicable for the next-generation LIBs.

关键词： Yolk-shell structure Li-ion batteries Alloying type Bismuth Rate capability

Recent progress of flexible sulfur cathode based on carbon host for lithium-sulfur batteries

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Journal of Materials Science & Technology 2020年第20期52卷 56-72页

作者： Zhuosen Wang xijun xu Shaomin Ji Zhengbo Liu Dechao Zhang Jiadong Shen Jun Liu Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou510641China School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou510006China

With the emergence and development of wearable devices,the novel ene rgy storage systems with flexible feature and high energy density are urgently *** we all know,for next generation high energystorage systems,lithium-sulfur(Li-S) batteries with a high theoretical capacity are regarded as one of the most promising *** addition,the flexible Li-S batteries have received more and more *** determined factor in the flexible Li-S batteries is how to design the foldable electrodes including both anode and *** for the flexible sulfur cathode,it could be obtained by integrating the electroactive sulfur with a flexible substrate,*** recent years,the flexible cathode of Li-S batteries have made considerable progress,however there are also many huge challenges needing to overcome,such as low content of sulfur,fast decrease of capacity and short cycle *** this paper,the current develop status of flexible cathodes of Li-S batteries have been summarized,and the future trend also be pointed out.

关键词： Li-S batteries Sulfur cathode Recent progress High energy density Flexible devices

Interface engineering for composite cathodes in sulfide-based all-solid-state lithium batteries

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Journal of Energy Chemistry 2021年第9期30卷 32-60页

作者： Yu Li Dechao Zhang xijun xu Zhuosen Wang Zhengbo Liu Jiadong Shen Jun Liu Min Zhu Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510641GuangdongChina

All-solid-state lithium battery(ASLB)based on sulfide-based electrolyte is considered to be a candidate for the next-generation high-energy storage *** the high ionic conductivity of sulfide solid electrolyte,the poor interfacial stability(mechanically and chemically)between active materials and sulfide solid electrolytes in composite cathodes leads to inferior electrochemical performances,which impedes the practical application of sulfide *** the past years,various of strategies have been carried out to achieve an interface with low impedance in the composite ***,a review of recent progress of composite cathodes for all-solid-state sulfide-based lithium batteries is summarized,including the interfacial issues,design strategies,fabrication methods,and characterization ***,the main challenges and perspectives of composite cathodes for high-performance all-solidstate batteries are highlighted for future development.

关键词： All-solid-state batteries Composite cathodes Sulfide solid electrolytes Interface

Investigation of colloidal biogenic sulfur flocculation:Optimization using response surface analysis

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Journal of Environmental Sciences 2016年第4期28卷 227-235页

作者： Fan Chen Ye Yuan Chuan Chen Youkang Zhao Wenbo Tan Cong Huang xijun xu Aijie Wang State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Key Laboratory of Environmental Biotechnology Research Center for Eco-Environmental SciencesChinese Academy of Sciences

The colloidal properties of biogenic elemental sulfur（S^0）cause solid–liquid separation problems,such as poor settling and membrane *** this study,the separation of S^0 from bulk liquids was performed using *** chloride（PAC）,polyacrylamide（PAM）and microbial flocculant（MBF）were compared to investigate their abilities to flocculate S^0 produced during the treatment of sulfate-containing wastewater.A novel approach with response surface methodology（RSM）was employed to evaluate the effects and interactions of flocculant dose,pH and stirring intensity,on the treatment efficiency in terms of the S^0 flocculation and the supernatant turbidity *** dose optimization results indicated that the S^0 flocculation efficiency decreased in the following order PAC〉MBF〉*** S^0 flocculation conditions were observed at pH 4.73,a stirring speed of 129 r/min and a flocculant dose of 2.42 mg PAC/mg *** optimum flocculation conditions,the S^0f locculation rate reached 97.53%.Confirmation experiments demonstrated that employing PAC for S^0 flocculation is feasible and RSM is an efficient approach for optimizing the process of S^0 *** results provide basic parameters and conditions for recovering sulfur during the treatment of sulfate-laden wastewaters.

关键词： Elemental sulfur Flocculation Optimization Response surface methodology (RSM)

An analysis of British and American literature education from the perspective of integration of general education and professional education

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International Journal of Technology Management 2017年第3期 64-66页

作者： xijun xu Foreign Language School Wuhan University of Technology HuhanHubei430070 China

In foreign language teaching in colleges, British and American literature is a key course. In this paper, we first described the literature status of English curriculum system in colleges and universities, then based on the analysis of British and American literature teaching mode of quality education, puts forward some corresponding measures. General education, as a universal education for all students, is an important part of education reform. In the general education system of colleges and universities, the setting up of foreign language courses plays an important role and value. British and American literature is an important part of foreign language teaching, but also an important way to improve students＇ humanistic quality.

关键词： General education professional education model construction application teaching mode.